Home / 19,619.48-29,412.62-8,517.78

Finding the Fourth Proportional to 19,619.48, 29,412.62 and 8,517.78

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Solution

The fourth proportional to 19,619.48, 29,412.62 and 8,517.78 is: 12,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.48 : 29,412.62 = 8,517.78 : x
  2. Step 2: Convert to fraction form
    19,619.48/29,412.62 = 8,517.78/x
  3. Step 3: Cross multiply
    19,619.48x = 29,412.62 × 8,517.78
  4. Step 4: Simplify right side
    19,619.48x = 250,530,226.38
  5. Step 5: Solve for x
    x = 250,530,226.38/19,619.48
  6. Step 6: Final answer
    x = 12,769.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.